O Problema do Alto Número de Weissenberg (HWNP) consiste na ocorrência de um colapso dos esquemas numéricos aplicados na solução da equação constitutiva para fluidos não-Newtonianos, que pode acarretar no surgimento de ...

The objective of this work is to study, through a simple equation, the statement that the numerical instability associated to the high Weissenberg number in equations with source term can be resolved by the use of the so ...

This work presents a numerical application of a generic conformation tensor transformation for simulating highly elastic flows of non-Newtonian fluids typically observed in computational rheology. In the Kernel-conformation ...

We present a numerical study of a stabilization method for computing confined and free-surface flows of highly elastic viscoelastic fluids. In this approach, the constitutive equation based on the conformation tensor, which ...

The numerical simulation of flows of highly elastic fluids has been the subject of intense research over the past decades with important industrial applications. Therefore, many efforts have been made to improve the ...

One difulty in the solution of complex viscoelasti ows o urs when numeri al ins- tabilities arise in the simulation. The instabilities result in a breakdown of numeri al s hemes used for solving the onstitutive equation ...

This work focuses on a stability study, using model equations, so that future extensions can be made, as well as testes can be applied directly to the coupled Navier-Stokes equation of a viscoelastic model. Here, however, ...